assert it.displayName == "UnmanagedComponentSpec 'sampleLib'"
                        assert it.toString() == "UnmanagedComponentSpec 'sampleLib'"
                        unmanagedData = "unmanaged"
                    }
                    sampleLib {
                        assert it instanceof UnmanagedComponentSpec
                        assert it.name == "sampleLib"

        given:
        buildFile << """
            interface UnmanagedComponentSpec extends ComponentSpec {}
            class DefaultUnmanagedComponentSpec extends BaseComponentSpec implements UnmanagedComponentSpec {}

            @Managed
            interface SampleComponentSpec extends UnmanagedComponentSpec {
                String getPublicData()
                void setPublicData(String data)